1. (수능완성 실전편, 7p 20번) if you know the sum of two of the angles you can instantly calculate the third; and knowing the precise shape of a triangle and the length of one side tells you the lengths of the other sides.
여기서 the other 에 밑줄이 쳐져잇엇는데용...
여기서 the other이 앞에서 이미 한면 이 언급된상태고 여기선 두면 을 지칭하는건데..
왜 the others 라고 안해요?

2. (수능 완성 실전편 7p 21번
they argue that people often derive a large sense of who/whom they are through an aliiance with specific groups and tend to associate themselves closely with groups likely to boost their self-esteem
who whom둘중에고르는건데... of+ 명사절 이고 뭐 간접의문문 이라고 설명이 되잇는데... 이해가 하나도 안가서용...
자세한 설명 부탁드려요..